Vacuum-feed fuel-reserve device



Sept. 23 1924.

' L. H. WHEELER VACUUM FUEL RESERVE DEVICE Filed May 5 E. m W

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Application filed May 5, 1922. serial No. 558,753.

The purpose ofthis invention is to provide an improved construction ofvacuum iuel feeding device for serving the carburetor of an internalcombustion engine from a low fuel source, particularly adapted toprovide a reserve supply of fuel. It consists in the elements andfeatures of construction. shown and described, as indicated in theclaims.

in the drawings Figure 1 is a diagrammatic view showing the relativepositions on an automobile of the several parts and elements consistingand concerned in the operation of this invention,

Figure 2 is a side elevation of the receptacles and their connectionswhich contain the characteristic features of the invention, one of saidreceptacles being partly broken away, as shown in vertical section, fordis closing the interior construction.

Figures 3, l, 5 and 6 are detail sections, axial With respect to itspassages, of one of the valve devices designed to be operated from thedrivers seat for controlling the de livery of the fuel from the ordinaryor the reserve receptacle, showing respectively four positions of thevalve member.

Figure 7 is a side elevation oil a modified form.

In the structure shown in the drawings the main low lcveliuel supplytank or source or fuel is shown at 1., 2 is a conduit leading from thelow level source to the primal or vacuum chamber, P, of the vacuum fuelfeed 7. device, not familiar constructipn, having in addition to saidprimal vacuum chamber, l, a secondary chamber, i, into which the liquidfuel is delivered by gravity/flow in the intervals. of operation ofsuction by which it is lifted from the main low source, 1, to saidprimal chamber or vacuum chamber. Said vacuum chamber is equipped in theusual manner of devices of this character, having beside the fuel inletthrough the pipe, 2, atinosphere inlets shown at 3 and. the suctionconnection 6, with suction controlling valve A, and atmosphere inletvalve a, connected and operated by the snap action, G, under control ofthe float, B, all of familiar type and mode of operation. The secondarychamber, 4", is connected by a pipe,

5.,ior delivery of the fuel to the carbureter,

not shown. 7 is a reserve iuel receptacle, preferably positionedalongside the receptacle, 4, with its discharge at substantially thesame level asthat of the receptacle, 4, said reserve receptacle" beingnot desirably extended more than very slightly above the high liquidlevel of said receptacle, 4,, be cause it is not designed that it shallbe fillcd,-and in. the ordinary proper operation of the device it cannotbe filled to a higher level. The delivery pipe, 5, from. the receptacle,i, has two connections with the bottom of the receptacle, 7 one by wayoi the pipe, 8, in which there is interposed a check valve, 9, openingfor delivery oil liquid from the receptacle, 4, to the reccptacle, 7,the other by way of the pipe, 11, at whose junction with the pipe, 5,there is provided a threeway valve, 12, of the turn-cock type, whosevalve member, 12", has a diametric passage, 12, and a radial passage,12', whereby at one position shown in. full line in Figure 3, directcommunication is afl'orded through the passage, 1.2", supplying; thecarbureter from the receptacle, 1, while supply fromthe re ceptacle, 7,is cut ofil And at another position of the valve member, 12",communication from the receptacle, -17, to the ca rbureter is cut off,and communication is open for supply i -om the receptacle, 7. And at athird Cit position communication is opened through the diametricalpassage, 12*, idr supply to the carburetor from the receptacle, 4,through the radical 12 and the final half of the diametric passage, 12",is opened iior supplying the carbureter from the receptacle,

13, connected with an operating crank shaft} 16, mounted upon the dashboard by which the operator may adjust the valve, 12, according to theconditions, for supplying the carburetor either from the receptacle, 4,or from the receptacle, 7, or from both said receptacles.

it will be understood that the main purpose of the construction shown toprovide areserve supply of fuel in the receptacle, '5,-

The valve member, 12, has a lever arm,

' 5,.will constitute a reserve 'for failure of operation of 'in thereceptacle,4. Audit will be under stood that the valve, 12

' service.

to be drawn upon in any emergency causing deficiencyfor failure ofsupply, as from exhaustion-ofthe main supply in the tank, 1, or thepumping devices being ordinarily set for permitting supply to thecarburetor from the receptacle, 4, cutting ofi' communication of thereceptacle, 7 saidreceptacle, 7, will become filled to'its limit,-thatis, to the high level limit of the receptacle, 4, by the excess pumpingcapacity of the device above.

the requirements of the carbureter, and'that the capacity, therefore, ofthe receptacle, 7,

' the emergency indicated, which will be drawn upon by the operatoradjusting the valve, 12, so as to put both chambers, 4: and 7, intocommunication with the'carbureter, or only the receptacle, 7, accordingto the conditions of the 1. la combination with a -vacuuin "fuel feedingdevice Which comprises a bi-caineral receptacle having a primal chamberwhich hassuction connection, fuel supply connection andatmosphere inlet,and which discharges by,gravity into the secondary chamber; a secondreceptacle whose chamber is connected with the secondary-chamber-of thefirst receptacle; a one-way seating valve in the communication betweensaid two receptacles opening for delivery of liquid into said secondreceptacle; a conduit-in-common to the two receptacles for theirdelivery to the carbureter; connections from said conduit -in-common-,leading back toward the re ceptacles respectively forconnectiontherewith at the same outlet at which the two chambers areconnected for deliver 1 from the .\y1th thesecondary chamber of thefirst rcceptacle; means for delivery of liquid fuel a second from thefirst receptacle into the socondg",

,n eansfor delivery from each receptacle to the carbureter; meansoperable at will for altern'atively (a) cutting off both receptaclesfrom the carburetor, (1)) cutting off the first mentioned receptacleWithout cutting off the second; (0), c1itting oil the second mentionedreceptacle without cutting off the first; and a one-wayseziting valve inthe commun cation between saidtwo receptacles opening I for delivery ofliquid to the second receptaclc. I v i 3. In'thcconstruction'defined inclaim 1, foregoing, the'discharg'e connections from the receptacles tionfor final "delivery to the carbureter through a conduit in common, themeans for alternative operation being, a three-way valve at their saidjunction.

In testimony whereof, I: have hereunto set my hand at Chicago, Illinois,this 1 day of May, 1922; i

LEONARD H. :WHEELER.

respectively making junc-

